@misc{indiciae3af43728d6f2,
  title = {Preliminary report on the general geology and engineering geology of Noonan quadrangle, North Dakota},
  author = {R. C. Townsend},
  year = {1947},
  doi = {10.3133/70222264},
  url = {https://pubs.usgs.gov/publication/70222264},
  note = {Source identifier: 70222264}
}